| Field | Specification |
|---|---|
| Target | |
| Alternative names | Programmed cell death protein 4;Neoplastic transformation inhibitor protein;Nuclear antigen H731-like;Protein 197/15a;PDCD4;H731; |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E. coli-derived human PDCD4 recombinant protein (Position: E346-L446). Human PDCD4 shares 97% and 96% amino acid (aa) sequence identity with mouse and rat PDCD4, respectively. |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody detects programmed cell death protein 4 (gene PDCD4) in human samples and is validated for flow cytometry, IHC and Western blot. The predicted molecular weight is 51.7 kDa, and the supplier reports an observed band at about 60 kDa.
PDCD4 (programmed cell death 4) is a translational repressor that binds the RNA helicase eIF4A and blocks its helicase activity and its association with eIF4G, reducing cap-dependent translation initiation. It also dampens JNK/AP-1 signaling, and because it acts as a tumor suppressor that restrains neoplastic transformation and invasion, it is widely studied in cancer biology and microRNA-21 regulation.
| Target | Programmed cell death protein 4 (gene PDCD4; UniProt Q53EL6, human) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Human |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4 |
| Calculated MW | 51.7 kDa |
| Observed MW | 60 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 0.25–0.5 µg/mL (Human) |
|---|---|
| IHC (paraffin sections) | 2–5 µg/mL (Human) |
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Human) |
Samples with a confirmed band (WB): human Daudi cells, human HeLa cells, human 293T cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): human appendiceal adenocarcinoma tissue, human gall bladder adenosquamous carcinomaa tissue, human gastric adenocarcinoma tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in EDTA buffer (pH 8.0).
Samples with a confirmed signal (flow cytometry): HepG2 cells.
Immunogen
Recombinant human PDCD4 fragment (Glu346–Leu446), expressed in E. coli. Sequence identity with the mouse and rat orthologs: 97% and 96%, respectively.
Reactivity Notes
The supplier lists reactivity with human. UniProt places programmed cell death protein 4 in the nucleus and cytoplasm. Tissue expression noted by UniProt (human): Up-regulated in proliferative cells. The samples tested by the supplier (listed above) are a practical starting point for positive controls.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
